The only sensible ends of literature are, first, the pleasurable toil of writing; second, the gratification of one's family and friends; and lastly, the solid cash.

译文：学习、询问、思考、辨析、实践，都是做学问的方法，没有只学习而不实践的。

任何圆的周长与其直径的比率小于3 1/7但大于3 10/71。

Introspection is the only method by which the mind can be directly observed.

据说人无完人。又据说磨练出完美。你们对下词好吗？

The secret of joy in work is contained in one word – excellence. To know how to do something well is to enjoy it.

I've learned that it's okay to be vulnerable.

天下不能由一个人治理，就设置官员来治理。